Cam-lubricating mechanism



AFTER 1929 M. p2. WIDELL UIWJM CAM LUBRI CATING MECHANISM Filed March 23, 1925 INVENTOR BY. W M y WTTORNEY Patented Apr. 9, 1329. f I

names stares earsaa easiest,

p MAGNETS E. WIDELL, OFZCINCINNATI, QHIO, ASSIGNOR '10 AMERICAN CAN COMPANY,

OF NEW YORK, N. 2., A CORPORATION OF NEW CAM-LUBRICATING MECHANISM.

' Applicationfiled March 23, 1925. Serial No. 17,556.

My invention relates to lubricating mechsecured to the shaft by means of a key 24 and anism. and has for its primary object the proa cam following roller 25 is disposed in the vision of an automatically operating device groove 23, said roller being mounted on a stud for lubricating cams or like mechanical parts 26 extending through the end of a lever 27,

which cannot be readily reached by ordinary which is mounted on a driven shaft 28. 'lfhis 0 oiling or lubricating systems. mechanism is well known and commonly used In the use of the well-known double wall or for converting a rotary motion into a rocking groove type of cam, in which a cam followor reciprocating motion and is described ing roller is disposedin the cam groove and merely for the purpose of indicating the 1 is actuated by the contour thereof, considerrelationship in which the device of my in 65 able difiicultylias been experienced in providvention is used.

ing the proper amount of lubricant to cause A central bore 29 is provided in the shaft free action of the roller in said groove, partic- 21 and communicates with a radial bore 31 ularly when the cams are so positioned that in said shaft registering with a radial bore 32 they capnot be reached by asplqsh oiling sysin the body of the cam, the latter being 70 tem, or the means used for lub icating other counter-bored near the periphery thereof, as

- parts of the mechanism. indicated at 33. A valve cage member 34 is In accordance with my invention, a proper threaded into the counter bore and encloses amount of lubricant is automatically supplied a ball valve 35, normally held by means of a to the cam roller during rotation of the cam spring 36 against a valve seat 37 surround- 75 and applied by said roller to the groove, with ing a valve opening 38 ,in the member 34.

; the result that the cam mechanism is kept Said ball normally protrudes slightly beyond efiiciently oiled at all times, the supply of luthe face of themember 34, being held in this bricant being synchronized with the rate position by the spring 36 andvby the presof,rotation and so controlled as to efiectively sure of the oil, or other lubricant which is 8 prevent excessive oiling. provided in the bores 29, 31 and 32 and which Numerous other objects and advantages of may be either liquid or in the form of grease the invention will be apparent as it is better or hard oil. In the event that liquid oil is understood from the following description, used, it may be supplied through a pipe 39,

' which, taken, in connection with the accoman elbow 41-, a stufiing box 42 and ahorizontal 85 panying drawings, discloses a preferred em pipe 42, the source of-supply being at asufbodiment thereof. ficient elevation to provide the desired pres- Referring tothe drawings, 1 sure by gravity, or said pressure being pro- Figure 1 is a sectional view through a cam vided by compressed air or gas," as desired.

equipped with a device embodying my inven- In the event that grease or hard oil lsused, 90 tion, the actuating lever and cam following any suitable pressure means may be cm roller being shown in position for operating ployed, the lubricant in either case belng unthe device; and v der suflicient pressure to cause it to pass out Fig. 2 is an elevational view of said cam through the opening 38 when thevball valve d associated parts. 35 is unseated. 95

On said drawings, illustrating the best From the foregolng, the operat on will be manner in which I have thus far contemapparent. lhe cam, when rotating 1n the plated applying the principles of the inven-' direction of the arrow 1n Flg. 1, periodically tion, the reference character 21 indicates a brings the extended ball 35 lnto contact with drive shaft upon which is mounted a cam 22, the roller 25 or pin 26 by wh ch said ball is 100 having a cam groove 23 formed, in the Sresforce-d lnwardly, a predetermlned amount of cut instance, in the circumferential face therelubrlcant being permitted to escape upon of, though it will be understood that the ineach contact with the roller 25 and being (118- vention is equally applicable to other forms trlbuted' about the cam groove by said roller of cams, as, for example, those having the ac- 25; The cam is thus automatlcally lubrl- 105 tuating groove in the side face thereof, or any cated with a sufliclent but not .BXCQSSIVB other form of cam wherein the cam following amount of lubricant to produce eflic1ent operroller is caused to pass successively over a ation given point in the cam track or where the cam It 1s thought that the lnvent on and many is fixed and the roller is movable. The cam is of its attendant advantages w1ll be underme stood from the foregoing description, and it will be apparent that various changes may be made in the form, construction and arrangement of the parts without departing from the spirit and scope of the invention, or s'ac'rificing all of its material advantages, the form hereinbefore described being merely a preferred embodiment thereof.

I claim: i a

1. The combination of'a shaft having an axial oil duet, a cam-roller, a cam having a lubricant duct leading from said axial duct and provided with an opening in the bottom of the cam groove opposite the end of the roller, a valve adaptedto close said opening and having a part adapted to encounter, the roller, and a spring pressing the valve to closing position, whereby the roller from time to time opens the valve and receives lubricant through said opening to be cam.

2. The combination of a cam engaging ele-, ment, a grooved cam having a lubricant duct provided with an opening in the bottom of the cam groove, a ball-valve in'the duct and movable a'little beyond the opening to close distributed to the the same, and a spring pressing the valve to 

